DsGetDcName() failures

I have an application that uses DsGetDcName() to determine the sites (and
domains) of servers in the network.
I have found that DsGetDcName() fails rather often, and the reason(s) is not
obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE, although
RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply retrying the call
will result in success, but more often it does not.
What can cause DsGetDcName() to fail (excluding the obvious situation where
the server is down or otherwise not accessible)?
Thanks,

Advertisements

Nick Burkitt wrote:
> I have an application that uses DsGetDcName() to determine the sites
> (and domains) of servers in the network.
> I have found that DsGetDcName() fails rather often, and the reason(s)
> is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
> although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
> retrying the call will result in success, but more often it does not.
> What can cause DsGetDcName() to fail (excluding the obvious situation
> where the server is down or otherwise not accessible)?
> Thanks,
>
What kind of application is this and what library provides the DsGetDcName
method?

--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"

Advertisements

Thanks. It's a VC++ app and I'm calling DsGetDcName() directly. I'm
passing a NETBIOS name as the first parameter and requesting a DNS-style name
by setting flag DS_RETURN_DNS_NAME. If the initial call fails with
ERROR_NO_SUCH_DOMAIN, I set the DS_FORCE_REDISCOVERY flag and repeat the
call. If the call fails for any other reason, I wait a bit (200 ms, I
believe), and repeat the call. Ten strikes and you're out.
Anything else you need?

-Nick

"Bob Barrows [MVP]" wrote:
> Nick Burkitt wrote:
> > I have an application that uses DsGetDcName() to determine the sites
> > (and domains) of servers in the network.
> > I have found that DsGetDcName() fails rather often, and the reason(s)
> > is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
> > although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
> > retrying the call will result in success, but more often it does not.
> > What can cause DsGetDcName() to fail (excluding the obvious situation
> > where the server is down or otherwise not accessible)?
> > Thanks,
> >
> What kind of application is this and what library provides the DsGetDcName
> method?
>
> --
> Microsoft MVP - ASP/ASP.NET
> Please reply to the newsgroup. This email account is my spam trap so I
> don't check it very often. If you must reply off-line, then remove the
> "NO SPAM"
>
>
>

As for the applicaiton, it is not an ASP web application, but a VC++ based
desktop application ,correct?

I haven't used Directory Sercies API much, however, since the error also
contains E_ACCESSDENIED, is it related to your application's running
identity since you may make remote query call to some remote machines?
Also, have you checked to see whether those error mostly ocurs when you
call the API against some certain remote machines?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) athttp://msdn.microsoft.com/subscriptions/support/default.aspx.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------
>From: =?Utf-8?B?TmljayBCdXJraXR0?= <>
>References: <>
<>
>Subject: Re: DsGetDcName() failures
>Date: Thu, 22 May 2008 18:47:01 -0700
>Hi Bob.
>
>Thanks. It's a VC++ app and I'm calling DsGetDcName() directly. I'm
>passing a NETBIOS name as the first parameter and requesting a DNS-style
name
>by setting flag DS_RETURN_DNS_NAME. If the initial call fails with
>ERROR_NO_SUCH_DOMAIN, I set the DS_FORCE_REDISCOVERY flag and repeat the
>call. If the call fails for any other reason, I wait a bit (200 ms, I
>believe), and repeat the call. Ten strikes and you're out.
>Anything else you need?
>
>-Nick
>
>
>"Bob Barrows [MVP]" wrote:
>
>> Nick Burkitt wrote:
>> > I have an application that uses DsGetDcName() to determine the sites
>> > (and domains) of servers in the network.
>> > I have found that DsGetDcName() fails rather often, and the reason(s)
>> > is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
>> > although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
>> > retrying the call will result in success, but more often it does not.
>> > What can cause DsGetDcName() to fail (excluding the obvious situation
>> > where the server is down or otherwise not accessible)?
>> > Thanks,
>> >
>> What kind of application is this and what library provides the
DsGetDcName
>> method?
>>
>> --
>> Microsoft MVP - ASP/ASP.NET
>> Please reply to the newsgroup. This email account is my spam trap so I
>> don't check it very often. If you must reply off-line, then remove the
>> "NO SPAM"
>>
>>
>>
>

Nick Burkitt wrote:
> Hi Bob.
>
> Thanks. It's a VC++ app and I'm calling DsGetDcName() directly. I'm
> passing a NETBIOS name as the first parameter and requesting a
> DNS-style name by setting flag DS_RETURN_DNS_NAME. If the initial
> call fails with ERROR_NO_SUCH_DOMAIN, I set the DS_FORCE_REDISCOVERY
> flag and repeat the call. If the call fails for any other reason, I
> wait a bit (200 ms, I believe), and repeat the call. Ten strikes and
> you're out.
> Anything else you need?
>
> -Nick
>
>
> "Bob Barrows [MVP]" wrote:
>
>> Nick Burkitt wrote:
>>> I have an application that uses DsGetDcName() to determine the sites
>>> (and domains) of servers in the network.
>>> I have found that DsGetDcName() fails rather often, and the
>>> reason(s)
>>> is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
>>> although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
>>> retrying the call will result in success, but more often it does
>>> not. What can cause DsGetDcName() to fail (excluding the obvious
>>> situation where the server is down or otherwise not accessible)?
>>> Thanks,
>>>
>> What kind of application is this and what library provides the
>> DsGetDcName method?
>>
>> --
>> Microsoft MVP - ASP/ASP.NET
>> Please reply to the newsgroup. This email account is my spam trap so
>> I don't check it very often. If you must reply off-line, then remove
>> the "NO SPAM"

--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"

Wow - I must have fat-fingered the group name when I first posted. This was
supposed to go to ASDI General Questions. :-#
Thanks for your time - I'll post again with hopefully better aim.

-Nick

"Bob Barrows [MVP]" wrote:
> You'll be unlikely to get an answer here: we concentrate on ASP/scripting
> questions. Congratulations if you do
> I've never done any C++ myself so there is no possibility that I will be
> able to help.
>
> You might try a group devoted to C++ questions. Perhaps one of these:
> http://forums.microsoft.com/MSDN/default.aspx?ForumGroupID=9&SiteID=1
>
> Or fire up a newsreader and go to comp.lang.c++
>
> Nick Burkitt wrote:
> > Hi Bob.
> >
> > Thanks. It's a VC++ app and I'm calling DsGetDcName() directly. I'm
> > passing a NETBIOS name as the first parameter and requesting a
> > DNS-style name by setting flag DS_RETURN_DNS_NAME. If the initial
> > call fails with ERROR_NO_SUCH_DOMAIN, I set the DS_FORCE_REDISCOVERY
> > flag and repeat the call. If the call fails for any other reason, I
> > wait a bit (200 ms, I believe), and repeat the call. Ten strikes and
> > you're out.
> > Anything else you need?
> >
> > -Nick
> >
> >
> > "Bob Barrows [MVP]" wrote:
> >
> >> Nick Burkitt wrote:
> >>> I have an application that uses DsGetDcName() to determine the sites
> >>> (and domains) of servers in the network.
> >>> I have found that DsGetDcName() fails rather often, and the
> >>> reason(s)
> >>> is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
> >>> although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
> >>> retrying the call will result in success, but more often it does
> >>> not. What can cause DsGetDcName() to fail (excluding the obvious
> >>> situation where the server is down or otherwise not accessible)?
> >>> Thanks,
> >>>
> >> What kind of application is this and what library provides the
> >> DsGetDcName method?
> >>
> >> --
> >> Microsoft MVP - ASP/ASP.NET
> >> Please reply to the newsgroup. This email account is my spam trap so
> >> I don't check it very often. If you must reply off-line, then remove
> >> the "NO SPAM"
>
> --
> Microsoft MVP - ASP/ASP.NET
> Please reply to the newsgroup. This email account is my spam trap so I
> don't check it very often. If you must reply off-line, then remove the
> "NO SPAM"
>
>
>

I originally also guess that you may post the question in this group by
mistake

Anyway, if you have any ASP related web dev questions, welcome to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:.

==================================================
Get notification to my posts through email? Please refer tohttp://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------
>From: =?Utf-8?B?TmljayBCdXJraXR0?= <>
>References: <>
<>
<>
<>
>Subject: Re: DsGetDcName() failures
>Date: Fri, 23 May 2008 09:39:01 -0700
>
>Hi Bob.
>
>Wow - I must have fat-fingered the group name when I first posted. This
was
>supposed to go to ASDI General Questions. :-#
>Thanks for your time - I'll post again with hopefully better aim.
>
>-Nick
>
>
>"Bob Barrows [MVP]" wrote:
>
>> You'll be unlikely to get an answer here: we concentrate on
ASP/scripting
>> questions. Congratulations if you do
>> I've never done any C++ myself so there is no possibility that I will be
>> able to help.
>>
>> You might try a group devoted to C++ questions. Perhaps one of these:
>> http://forums.microsoft.com/MSDN/default.aspx?ForumGroupID=9&SiteID=1
>>
>> Or fire up a newsreader and go to comp.lang.c++
>>
>> Nick Burkitt wrote:
>> > Hi Bob.
>> >
>> > Thanks. It's a VC++ app and I'm calling DsGetDcName() directly. I'm
>> > passing a NETBIOS name as the first parameter and requesting a
>> > DNS-style name by setting flag DS_RETURN_DNS_NAME. If the initial
>> > call fails with ERROR_NO_SUCH_DOMAIN, I set the DS_FORCE_REDISCOVERY
>> > flag and repeat the call. If the call fails for any other reason, I
>> > wait a bit (200 ms, I believe), and repeat the call. Ten strikes and
>> > you're out.
>> > Anything else you need?
>> >
>> > -Nick
>> >
>> >
>> > "Bob Barrows [MVP]" wrote:
>> >
>> >> Nick Burkitt wrote:
>> >>> I have an application that uses DsGetDcName() to determine the sites
>> >>> (and domains) of servers in the network.
>> >>> I have found that DsGetDcName() fails rather often, and the
>> >>> reason(s)
>> >>> is not obvious. The typical error code is RPC_S_SERVER_UNAVAILABLE,
>> >>> although RPC_E_ACCESS_DENIED is popular, as well. Sometimes simply
>> >>> retrying the call will result in success, but more often it does
>> >>> not. What can cause DsGetDcName() to fail (excluding the obvious
>> >>> situation where the server is down or otherwise not accessible)?
>> >>> Thanks,
>> >>>
>> >> What kind of application is this and what library provides the
>> >> DsGetDcName method?
>> >>
>> >> --
>> >> Microsoft MVP - ASP/ASP.NET
>> >> Please reply to the newsgroup. This email account is my spam trap so
>> >> I don't check it very often. If you must reply off-line, then remove
>> >> the "NO SPAM"
>>
>> --
>> Microsoft MVP - ASP/ASP.NET
>> Please reply to the newsgroup. This email account is my spam trap so I
>> don't check it very often. If you must reply off-line, then remove the
>> "NO SPAM"
>>
>>
>>
>

Share This Page

Welcome to The Coding Forums!

Welcome to the Coding Forums, the place to chat about anything related to programming and coding languages.

Please join our friendly community by clicking the button below - it only takes a few seconds and is totally free. You'll be able to ask questions about coding or chat with the community and help others.
Sign up now!